Method of producing castings.



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@wenn STATES' PATENT onirico;

MIEHOD OF PRODUCING CASTINGS.

Specification of Let-tors Patent.

Patented sept. 150.1%?.

Application tiled January 9,1905. Serial No. 240.357.

To all whom il may concern:

Be it known that l, GEORGE HALE llimuooli, a eiti= zen ol the UnitedStates, residing al, 'lauutou, county of Bristol7 Stille ofIllussaehusetta, have invented a cer- Lain new and useful improvementiuMeihod of Producing Castings, ol which the following is a speeitil'utionreference heine had therein to Vthe aeconi )an 'in 7 i n n 'comparedwith the area, of their surfaces, such for exuniple as ornamentulhron/.e plaques or similar articles. Such articles are usually mallefrom sheet nietnl on aeeouni of the impossibility.' of producing y.uctieal castinffi. l. have (linen-tiered thai; phosphorus applied to l..l metal while the latter ie in e. molten suite in the mold will improveits fluidity or flew, thereby Causing it. lo proi'lerlg.' andcompletely-lill the mold.

invention I prefer to use phosphorus lu practicing; my

in the 'orzn which r.- eonimercinlly known as amorphous or redphosphorus, his form being non-poisonous and saler and more convenientto handle. `when the molti, utleieti in any well known manner, is readyto receive the molten metal, I sprinkle on otherwise place a preferablythiii layer or coating oli the phoa phorus powder .upon and within thecavity oi alle mold so tha it will :tonie into eonineo with the metalwhich is poured into the mold. While l prefer to distribute, as abovedescribed, the phospho'fus throughout the surfew of the mold, my o. inedin thin way, yer; l do not know that this in es sential, sinne so ier aslam ahleto determine goed reu sulla might; be ohminel Without coveringor coating or otherwlno distributing the phosphorus over or upon theiefhoieol' the. inolcl euriae l have ountl lt very eem/onu befahren-oliehaving been thus im' v lent to apply the phosphorus to the mold vbyadniixing it with kerosene oil amllhen spraying the mixture on to heluohl.- After applying the phosphorus I run the molten luf-lul into themolti 'und it flows rezulily, anni completely and iwrleelly lills rholutter, even iu thee-use or molds for relatively thin articles ofconsiel'eruhle area or mateur, und a .'ery :ih-urp, souiid antihomogeneous casting is produced.

l have mentioned "liar(l niet-uis and referred specilicully to iron:intl alloysol (opper. I (lo not wish lo be limited to any kind or classof metals. .l tirst eniployed my ention iu casting' hard alloys ofoopper, hut pmetiee in the vueling oi' other metals `iuatiie me inholieving hu where like use oi my invia Lion is not.

nlrlts ln :applying u phosphorus to the inner surface of the mold andthen runnlmzthe molten mehr! luto the mold.

siste: in eourlug the inner surface of the inohl w'uh :i mixture ofphosphorus una! u volaille hydrm-urhon oil und their ruunlng the moltenm. .al into the mold.'

1l. lhe method of producing u me'ml earning; which eon siste-inapplyingr amorphous phosphorus 'tu the inner aux face of the mold undthen running rho molten metal into the mold.

l. The method'of producing n motul ensi'lnf; whleh consiste insaurai-int: the luuor surfaces o the mold wl'h u mixture ol' phosphorusn ud volaille liyilroeurhon oil and then running rhe molten meml intothe mold.

.In testimony whereo l am: my sigunlure, lu presence of two witnesses, lA

GEORGE HALE BRABROOK Witnesses WM. A.. Mnennoo, Aurel: ll. Monnlsou.

absolutely neeeewary in ortler to obtain u rooting, it is,

L'.. 'liie mefhod of produeliu: u metal rusting which eon-

